Your guys needs to take a stroll over www.diyaudio.com to see various kinds of tonearm designs:
http://www.diyaudio.com/forums/showthread.php?s=6acc14983a3f8155950c23085fd031e1&threadid=87562
http://www.diyaudio.com/forums/showthread.php?s=6acc14983a3f8155950c23085fd031e1&threadid=73822
http://www.diyaudio.com/forums/showthread.php?s=6acc14983a3f8155950c23085fd031e1&threadid=89867
http://www.diyaudio.com/forums/showthread.php?s=6acc14983a3f8155950c23085fd031e1&threadid=87562
http://www.diyaudio.com/forums/showthread.php?s=6acc14983a3f8155950c23085fd031e1&threadid=73822
http://www.diyaudio.com/forums/showthread.php?s=6acc14983a3f8155950c23085fd031e1&threadid=89867